Whose Golden Finger for Cultivating Immortals Is so Dangerous?

Good news, Bai Chen traveled through time, and even better news, he also got a Guizang gourd that speeds up his cultivation. But bad news also came one after another. The nine-layered cave in this gourd has long since collapsed, and is surrounded by dangers and murders at every step. Ancient ferocious beasts are raging, and mecha puppets are rampant... What's worse is that there are people in this gourd. Sect monks, demon sect witches, casual cultivators, evil cultivators... Want to safely use this gourd to quickly improve your spiritual practice? This is not as simple as imagined.